A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms agains himself. He makes his failure certain by himself being the first person to be convinced of it.
The secret of success in society is a certain heartiness and sympathy. A man who is not happy in company, cannot find any word in his memory that will fit the occasion; all his information is a little impertinent. A man who is happy there, finds in every turn of the conversation occasions for the introduction of what he has to say. The favorites of society are able men, and of more spirit than wit, who have no uncomfortable egotism, but who exactly fill the hour and the company, contended and contenting.
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.
The heights by great men reached and kept were not attained by sudden flight, but they, while their companions slept, were toiling upward in the night.
I dread success. To have succeeded is to have finished one's business on earth, like the male spider who is killed by the female the moment he has succeeded in his courtship. I like the state of continual becoming, with a goal in front and not behind.
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.