What humanity owes to personalities like Buddha, Moses, and Jesus ranks for me higher than all the achievements of the enquiring and constructive mind.

If God has created the world, his primary worry was certainly not to make its understanding easy for us

It is every man's obligation to put back into the world at least the equivalent of what he takes out of it.

I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.

We must recognize what in our accepted tradition is damaging to our fate and dignity-and shape our lives accordingly.

There is a driving force more powerful than steam, electricity and nuclear power: the will.

Science is the century-old endeavor to bring together by means of systematic thought the perceptible phenomena of this world into as thorough-going an association as possible.