People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.

Security is mostly a superstition. It does not exist in nature.... Life is either a daring adventure or nothing.

The best and most beautiful things in the world cannot be seen or even touched. They must be felt within the heart.

Character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, ambition inspired, and success achieved.

There is a homely old adage which runs: "Speak softly and carry a big stick; you will go far." If the American nation will speak softly, and yet build and keep at a pitch of the highest training a thoroughly efficient navy, the Monroe Doctrine will go far.

Mathematics is the queen of the sciences.

A woman without a man is like a fish without a bicycle.

In the United States there is more space where nobody is than where anybody is. That is what makes America what it is.

If you want to see the true measure of a man, watch how he treats his inferiors, not his equals.

A good book is the best of friends, the same today and forever.