"I expect to pass through this world but once. Any good thing therefore that I can do, or any kindness I can show to any fellow-creature, let me do it now; let me not defer or neglect it for I shall not pass this way again."
(Variously attributed to quakers Stephen Grellet, 1773-1855, and William Penn, 1644-1718, and to Mahatma Gandhi, 1869-1948, Indian spiritual and leader, humanitarian and constitutional independence reformer. This quote is also shown as a slightly different version, as below.)
"I expect to pass through this world but once. Any good therefore that I can do, or any kindness I can show to any fellow human being, let me do it now. Let me not defer or neglect it for I shall not pass this way again."