“Only those who will risk going too far can possibly find out how far one can go” (TS Eliot, preface to Transit of Venus: Poems by Harry Crosby). Similarly, “You never know what is enough unless you know what is more than enough” (W Blake, Proverbs of Hell, line 46).
“A truth that’s told with bad intent\ Beats all the lies you can invent” (W Blake, Auguries of Innocence, line 53).
“A dog starved at his master’s gate\ Predicts the ruin of the state” (W Blake, Auguries of Innocence, line 9).
“The true method of knowledge is experiment” (W Blake, All Religions are One).