Calculating profit and loss ratios on the go is basic for short-term trading, while constantly reducing your position is basic for long-term investing.

The biggest risk is people. Risk always exists; the question is who can handle it and whether they have the ability to do so.

Professional investors can never really judge anything. Anything is possible, and black swan events will always emerge.

At any time, there’s no such thing as a right or wrong decision—only whether the person behind it is the right one.