Letters 109.8

Again they say: “When the highest degree of heat has been attained, it is superfluous to apply more heat; and when the Supreme Good has been attained, it is superfluous to have a helper. Does a completely stocked farmer ask for further supplies from his neighbours? Does a soldier who is sufficiently armed for going well-equipped into action need any more weapons? Very well, neither does the wise man; for he is sufficiently equipped and sufficiently armed for life.”

Seneca, Letters to Lucilius 109.8, translated by Richard Mott Gummere