The great poem must have the stamp of greatness as well as its essence.

There is a chasm between knowledge and ignorance which the arches of science can never span.

Yet poetry, though the last and finest result, is a natural fruit. As naturally as the oak bears an acorn, and the vine a gourd, man bears a poem, either spoken or done. It is the chief and most memorable success, for history is but a prose narrative of poetic deeds.

I realized a school doesn't need a School Committee or Trustees or Governors or lumber or approved textbooks. All a school needs is a mind that sends and minds that receive. I shall teach my own students how to teach themselves. My own school. No buildings. Break out of the classroom prison. All I need is SKY. The Universe can be my classroom - the great vast world of the Concord countryside.

If the condition of things which we were made for is not yet, what were any reality which we can substitute? We will not be shipwrecked on a vain reality.

He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one. Mathematics should be mixed not only with physics but with ethics; that is mixed mathematics. The fact which interests us most is the life of the naturalist. The purest science is still biographical.

To be a philosopher... is to solve some of the problems of life, not only theoretically, but practically.