He studied multiple languages and disciplines at University College, Oxford, and began his political career in Parliament, representing the Welsh counties Montgomeryshire and Merioneth.
His diplomatic career was most active in Paris, where he aimed to arrange a marriage between Charles, Prince of Wales, and Henrietta Maria, which took place in 1625.
Herbert also produced a body of poems, showing his prowess as a faithful disciple of Donne, and his autobiography provides a lively account of his life up until 1624.
He returned to Oxford with his wife and mother, continued his studies, and learned French, Italian and Spanish, as well as music, riding and fencing.
[6] In 1608, Edward Herbert went to Paris, with Aurelian Townshend, enjoying the friendship and hospitality of the old Constable de Montmorency at Merlou and meeting King Henry IV; he lodged for many months with Isaac Casaubon.
[10] In 1610 Herbert served as a volunteer in the Low Countries under the Prince of Orange, whose intimate friend he became, and distinguished himself at the capture of Juliers from the Holy Roman Emperor.
[11] He paid a visit to Spinola, in the Spanish camp near Wezel, and afterwards to the elector palatine at Heidelberg, subsequently travelling in Italy.
At the instance of the Duke of Savoy he led an expedition of 4,000 Huguenots from Languedoc into Piedmont to help the Savoyards against Spain, but after nearly losing his life in the journey to Lyon he was imprisoned on his arrival there, and the enterprise came to nothing.
His chief objects were to accomplish the marriage between Charles, Prince of Wales and Henrietta Maria, and to secure the assistance of Louis XIII for Frederick V, Elector Palatine.
He determined after this to take no further part in the struggle that became the English Civil War, retired to Montgomery Castle, and declined the king's summons to Shrewsbury,[3] pleading ill-health.
In 1647 he paid a visit to Pierre Gassendi at Paris, and died in London the following summer, aged 65, being buried in the church of St Giles in the Fields.
Herbert's major work is the De Veritate, prout distinguitur a revelatione, a verisimili, a possibili, et a falso[3] (On Truth, as It Is Distinguished from Revelation, the Probable, the Possible, and the False)[15] He published it on the advice of Grotius.
It is also to some extent dependent on the De dis Syris of John Selden, and the Quaestiones celeberrimae in Genesim of Marin Mersenne.
His satires are poor, but a few of his lyrical verses show power of reflection and true inspiration, while his use of the metre afterwards employed by Tennyson in his "In Memoriam" is particularly happy and effective.
To these works must be added A Dialogue between a Tutor and a Pupil,[24] which is of disputed authenticity;[25] and a treatise on the king's supremacy in the Church (manuscript in the Record Office and at the Queen's College, Oxford).
[26] His own compositions, in all four preludes, four pavans and a courante, are conservative in style, showing little influence from the works of the French school that appear in his collection.
He said that: every religion believes that the Deity can hear and answer prayers; and we are bound to assume a special Providence—to omit other sources of proof—from the universal testimony of the sense of divine assistance in times of distress.
Herbert wrote: Being thus doubtful in my Chamber, one fair day in the Summer, my Casement being opened towards the South, the Sun shining clear and no Wind stirring, I took my book, De Veritate, in my hand, and, kneeling on my Knees, devoutly said these words: "O Thou Eternal God, Author of the Light which now shines upon me, and Giver of all inward Illuminations, I do beseech Thee, of Thy infinite Goodness, to pardon a greater Request than a Sinner ought to make; I am not satisfied enough whether I shall publish this Book, De Veritate; if it be for Thy glory, I beseech Thee give me some Sign from Heaven, if not, I shall suppress it."
I had no sooner spoken these words, but a loud 'tho yet gentle Noise came from the Heavens (for it was like nothing on Earth) which did so comfort and cheer me, that I took my Petition as granted, and that I had the Sign I demanded, whereupon also I resolved to print my Book.
[citation needed] Modern scholars of deism often have difficulty fitting Herbert's religious views into their scheme of what deists believed.
[39] Herbert thought that divine inspiration generally happened through "the medium of spirits ... variously called angels, demons, intelligences and geniuses".