All the suffering and joy we experience depend on conditions.
And as long as you're subject to birth and death, you'll never attain enlightenment.
If you use your mind to study reality, you won't understand either your mind or reality. If you study reality without using your mind, you'll understand both.
Everything sacred, nothing sacred.
The mind is always present. You just don't see it.
To see nothing is to perceive the Way, and to understand nothing is to know the Dharma, because seeing is neither seeing nor not seeing, and because understanding is neither understanding nor not understanding.