"None are so old as those who have outlived enthusiasm."
"Age is an issue of mind over matter. If you don't mind, it doesn't matter."Henry David Thoreau on Mark Twain
"Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young."Henry David Thoreau on Henry Ford
"Wrinkles should merely indicate where smiles have been."Henry David Thoreau on Mark Twain
"True terror is to wake up one morning and discover that your high school class is running the country."Henry David Thoreau on Kurt Vonnegut
"A diplomat is a man who always remembers a woman's birthday but never remembers her age."Henry David Thoreau on Robert Frost
"I love to be alone. I never found the companion that was so companionable as solitude."
"I have never found a companion that was so companionable as solitude. We are for the most part more lonely when we go abroad among men than when we stay in our chambers. A man thinking or working is always alone, let him be where he will."
"A man is rich in proportion to the number of things he can afford to let alone."
"The man who goes alone can start today but he who travels with another must wait till that other is ready."
"There is danger that we lose sight of what our friend is absolutely, while considering what she is to us alone."