दक्षस्मृति - मनस्

न स्थिरं क्षणमप्येकं उदकं तु यथोर्मिभिः ।
वाताहतं तथा चित्तं तस्मात्तस्य न विश्वसेत् ॥

- दक्षस्मृति

When there wind blowing the water does not stay still even for a second. Our mind is just like that. It will keep changing every second. Never trust it.

- Daksha Smriti