There is no failure except in no longer trying.

Genius is often only the power of making continuous efforts.

When you cease to make a contribution, you begin to die.

I could not at any age be content to take my place in a corner by the fireside and simply look on.

If anyone were to ask me what I want out of life I would say- the opportunity for doing something useful, for in no other way, I am convinced, can true happiness be attained.

When you give joy to other people, you get more joy in return. You should give a good thought to happiness that you can give out.

One swallow does not make a spring, nor does one fine day

I have tried to keep on with my striving because this is the only hope I have of ever achieving anything worthwhile and lasting.

Success is a journey not a destination. The doing is usually more important than the outcome. Not everyone can be Number 1.

If the quality and quantity of continuous effort toward goals matters as much as I think it does, we may actually get more productive, not less, as we get older - even if we can't pull all-nighters like we used to.

The reality is we live in a world that's filled with stuff, but quitting is not an option.

Allowing only ordinary ability and opportunity, we may explain success mainly by one word and that word is WORK! WORK!! WORK!!! WORK!!!! Not transient and fitful effort, but patient, enduring, honest, unremitting and indefatigable work into which the whole heart is put[...] There is no royal road to perfection.