"Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude."
"Chemistry is yet, indeed, a mere embryon. Its principles are contested; experiments seem contradictory; their subjects are so minute as to escape our senses; and their result too fallacious to satisfy the mind. It is probably an age too soon to propose the establishment of a system."
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Source: Thomas Jefferson (1829). “Memoir, correspondence, and miscellanies from the papers of T. Jefferson”
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"Honesty is the first chapter in the book of wisdom."
"The end of democracy and the defeat of the American Revolution will occur when government falls into the hands of lending institutions and moneyed incorporations."
"I never considered a difference of opinion in politics, in religion, in philosophy, as cause for withdrawing from a friend."
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"Laws that forbid the carrying of arms . . . disarm only those who are neither inclined nor determined to commit crimes . . . Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man."