The most difficult thing is the decision to act; the rest is merely tenacity.

Life is not only merriment. It is desire and determination.

What you seek is seeking you.

It is the power of thought that gives man power over nature.

It is not because things are difficult that we do not dare; it is because we do not dare that they are difficult.

There is nothing so useless as doing efficiently that which should not be done at all.