“A man knocking on the door of a brothel is looking for God.”

Aleph (2011)

Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 1
Source: Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values

Far (2009)

Source: Sati

Vol. I, The Way of Illumination Section I - The Way of Illumination, Part III : The Sufi http://wahiduddin.net/mv2/I/I_I_3.htm
The Spiritual Message of Hazrat Inayat Khan
Context: What is the Sufi's belief regarding the coming of a World Teacher, or, as some speak if it, the "Second Coming of Christ?" The Sufi is free from beliefs and disbeliefs, and yet gives every liberty to people to have their own opinion. There is no doubt that if an individual or a multitude believe that a teacher or a reformer will come, he will surely come to them. Similarly, in the case of those who do not believe that any teacher or reformer will come, to them he will not come. To those who expect the Teacher to be a man, a man will bring the message; to those who expect the Teacher to be a woman, a woman must deliver it. To those who call on God, God comes. To those who knock at the door of Satan, Satan answers. There is an answer to every call. To a Sufi the Teacher is never absent, whether he comes in one form or in a thousand forms he is always one to him, and the same One he recognizes to be in all, and all Teachers he sees in his one Teacher alone. For a Sufi, the self within, the self without, the kingdom of the earth, the kingdom of heaven, the whole being is his teacher, and his every moment is engaged in acquiring knowledge. For some, the Teacher has already come and gone, for others the Teacher may still come, but for a Sufi the Teacher has always been and will remain with him forever.

5-Oct-2005, DCFC website
Said after 9 games without a win.

Variant: If opportunity doesn’t knock, build a door.

Solness, Act I
The Master Builder (1892)

Gooseberries (1898)