Some quotes I particularly like:

“Fate loves the fearless.” James Russell Lowell

“How vain it is to sit down to write when you have not stood up to live!” HDT

“Don’t part with your illusions. When they are gone, you may still exist, but you have ceased to live.” Mark Twain

“What fun is it being cool if you can’t wear a sombrero?” Calvin and Hobbes

“Climb the mountain not to plant your flag, but to embrace the challenge, enjoy the air and behold the view. Climb it so you can see the world, not so the world can see you.” David McCullough

“I wish to preach, not the doctrine of ignoble ease, but the doctrine of the strenuous life, the life of toil and effort, of labor and strife; to preach that highest form of success which comes, not to the man who desires mere easy peace, but to the man who does not shrink from danger, from hardship, or from bitter toil, and who out of these wins the splendid ultimate triumph.” Theodore Roosevelt

“A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.” Winston Churchill

“Gentlemen, don’t fight the problem. Solve it!” General Marshall