So long as it remained united, the Committee was virtually invulnerable, but it had scarcely attained the apogee of its power before signs of internal conflict appeared. The Committee of Public Safety had never been a homogeneous body. It was a coalition cabinet. Its members were kept together less by comradeship or common ideals than by calculation and routine. The press of business which at first prevented personal quarrels also produced tired nerves. Trifling differences were exaggerated into the issues of life and death. Small disputes estranged them from one another. Carnot, in particular, was irritated by the criticisms directed at his plans by Robespierre and Saint-Just, Dispute followed dispute. Bickering broke out on the Committee of Public Safety, with Carnot describing Robespierre and Saint-Just as "ridiculous dictators" and Collot making veiled attacks on the "Incorruptible". From the end of June until 23 July Robespierre ceased to attend the Committee.