思 (sī)
to think; to consider
Etymology
Thought is associated with the head (囟) and heart (心). 囟 is also a phonetic component.
Shuowen Jiezi
《說文》：“思，容也。从心，囟聲。”
Components
- 囟 (sound, meaning) — Depicts the top of the head. The modern form of the this component looks like 田 (field), but is unrelated.
- 心 (meaning)