There is no success without sacrifice. If you succeed without sacrifice it is because someone has suffered before you. If you sacrifice without success it is because someone will succeed after.
Youth is the time to go flashing from one end of the world to the other to try the manners of different nations; to hear the chimes at midnight; to see the sunrise in town and country; to be converted at a revival; to circumnavigate the metaphysics, write halting verses, run a mile to see a fire, and wait all day long in the theatre to applaud Hernani.
Money is the most important thing in the world. It represents health, strength, honor, generosity, and beauty as conspicuously as the want of it represents illness, weakness, disgrace, meanness, and ugliness.
I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success ... Such emotions make a man forget food, sleep, friends, love, everything.
I shall do less whenever I shall believe what I am doing hurts the cause and I shall do more whenever I shall believe doing more will help the cause. I shall try to correct errors when shown to be errors and I shall adopt new views so fast as they shall appear to be true views.
Every true man is a cause, a country, and an age; requires infinite spaces and numbers and time fully to accomplish his design;--and posterity seem to follow his steps as a train of clients.