The mere thought hadn't even begun to speculate about the merest possibility of crossing my mind. Douglas Adams
I am assuming that God exists and I am glad that there is no way to prove this. [Because] I would run through the proof once, and then I'd forget it, and I would never speculate about spiritual things and mysteries otherwise. And, I think, my life would be very incomplete. Donald Knuth
I secretly think reality exists so we can speculate about it. Slavoj Žižek
You would go mad if you began to speculate about the impact your novel might have while you were still writing it. Jonathan Coe
I am not going to speculate about the emotions that might be involved in avian infidelity. Tim Birkhead
If we now reintroduce the conception of the complex organization as an open system subject to criteria of rationality, we are in a position to speculate about some dynamic properties of organizations. James D. Thompson