“I cannot cause light; the most I can do is try to put myself in the path of its beam. It is possible, in deep space, to sail on solar wind. Light, be it particle or wave, has force: you can rig a giant sail and go. The secret of seeing is to sail on solar wind. Hone and spread your spirit till you yourself are a sail, whetted, translucent, broadside to the merest puff”
“The secret of seeing is to sail on solar wind.”
“You cannot change the wind, but you can adjust the sails.”
“I’ll always be there, Anna, in every ship you see sailing past. I’ll be the wind in its sail.”
“You can't change the wind but you can set your sails.”
“We cannot direct the wind, but we can adjust the sails.”