Who wrote “Where ignorance is bliss, it is folly to be wise“?

Thomas Gray, (born Dec. 26, 1716, London—died July 30, 1771), English poet whose “An Elegy Written in a Country Churchyard” is one of the best known of English lyric poems.
- Thomas Gray famous for his elegies.
His notable work:
- Elegy Written in a Country Churchyard.
- Hymn to Adversity.
- Ode On A Distant Prospect Of Eton College.
- Ode on the death of a favorite cat.
- Ode On The Pleasure Arising From Vicissitude.
- Ode On The Spring.
- On the Death of Richard West.

 His famous quotations:
- Where ignorance is bliss, it is folly to be wise.
- Full many a flower is born to blush unseen, And waste its sweetness on the desert air.
- The paths of glory lead but to grave.

Source: Britannica.com and The Oxford Dictionary of Quotation.