How old were you when you acquired language (the ability to compose complete sentences)?

My first memories date back to that time, when I was 18 months old.

One of the first things I told my parents was that I didn't need diapers anymore. It was on the back seat of their car, on the passenger side (I remember the place, my mother was actually changing me after a long trip).

It was on the road to holidays in Spain, and I have distinct memories of the topography of the apartment, the beach and the bay, and their relative positions. I also remember going out for a walk alone with my dad, between the white villas.

We moved when I was four, and I also have several memories of the old house, including the full topography including furniture, a dark blue beach balloon, a harmless fall from the top of the staircase with a spherical vacuum cleaner, unrolling the toilet paper from the first floor to the ground floor because there wasn't any TP below... having the red toy car I had received as a reward for stopping sucking my thumb confiscated for relapsing.

I also remember the feeling of my long wet hairs on my back when I was lying on the chest in the bathtub, with the head raised. I only had long hairs between 2 and 3.