The past is but the past of a beginning.

Cycle trails will abound in Utopia.

An immense and ever-increasing wealth of knowledge is scattered about the world today; knowledge that would probably suffice to solve all the mighty difficulties of our age, but it is dispersed and unorganized. We need a sort of mental clearing house for the mind: a depot where knowledge and ideas are received, sorted, summarized, digested, clarified and compared.

This World Youth movement claims to represent and affect the politico-social activities of a grand total of forty million adherents - under the age of thirty...It may play an important and increasing role in the consolidation of a new world order.

The idea of a world commonweal has to be established as the criterion of political institutions, and also as the criterion of general conduct in hundreds of millions of brains. It has to dominate education everywhere in the world. When that end is achieved, then the world state will be achieved.

Heresies are experiments in man's unsatisfied search for truth.

My days I devote to reading and experiments in chemistry, and I spend many of the clear nights in the study of astronomy. There is, though I do not know how there is or why there is, a sense of infinite peace and protection in the glittering hosts of heaven. There it must be, I think, in the vast and eternal laws of matter, and not in the daily cares and sins and troubles of men, that whatever is more than animal within us must find its solace and its hope.