Reading, after a certain age, diverts the mind too much from its creative pursuits. Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

The value of achievement lies in the achieving.

Only morality in our actions can give beauty and dignity to life.

One can only continue to expect to be read if one omits everything that is unimportant.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking.

Given the millions of billions of Earth-like planets, life elsewhere in the Universe without a doubt, does exist. In the vastness of the Universe we are not alone.